# A164626 (b-file synthesized from sequence entry) 0 1 1 15 2 210 3 2940 4 41160 5 576240 6 8067360 7 112942935 8 1581199620 9 22136774205 10 309914552220 11 4338799717980 12 60743139868320 13 850403171588880 14 11905633390308840 15 166678713297370365 16 2333499827827833210